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Oxidation behaviour of the near α-titanium alloy IMI 834
Alloys and Steels Volume 27 Issue 4 August 2004 pp 347-354
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Permanent link:
https://www.ias.ac.in/article/fulltext/boms/027/04/0347-0354 -
Keywords
Near 𝛼-titanium alloy IMI 834 ;thermogravimetric studies ;activation energy ;oxidation behaviour ;surface morphology. -
Abstract
Oxidation behaviour of the near 𝛼-titanium alloy IMI 834 was investigated over a range of temperatures, from 600–800°C, in air. Specimens were solution-treated in the 𝛼 + 𝛽 and 𝛽 phase fields for 1 h and 1/2 h, respectively and cooled in air to room temperature. The solution treated samples were subjected to stabilization treatment at 700°C for 2 h, followed by cooling in air. Oxidation behaviour of these samples was studied from 600–800°C in air, for 50 h. The morphology of the scales formed was examined by SEM and the phases present in the scales were characterized by X-ray diffraction. While there was little oxidation at 600°C, the rate of oxidation increased at higher temperatures. In general, the rate of oxidation was found to be more in the 𝛼 + 𝛽 treated condition than that in the 𝛽 treated one. The results are discussed in terms of the characteristics of the oxide film formed under different conditions.
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Author Affiliations
- Centre of Advanced Study, Department of Metallurgical Engineering, Institute of Technology, Banaras Hindu University, Varanasi 221 005, India
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Dates
- Published
- August 2004
- Manuscript received
- 27 February 2004
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